Lightweight electric bedstead

ABSTRACT

An electric bedstead includes a frame having first and second rods, a supporting cloth, first and second clamping members. The supporting cloth has a supporting portion, a first bending portion extending from a first lateral side of the supporting portion and attached on the first rod, and a second bending portion extending from a second lateral side of the supporting portion and attached on the second rod. The first clamping member is mounted to the first rod in a way that the first bending portion is clamped between the first clamping member and the first rod. The second clamping member is mounted to the second rod in a way that the second bending portion is clamped between the second clamping member and the second rod. As a result, the electric bedstead is lightweight to facilitate carry, storage and assembly of the electric bedstead.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention relates generally to an electric bedstead and more particularly, to a lightweight electric bedstead.

2. Description of the Related Art

A conventional electric bedstead is generally composed of a fixed base, a plurality of driving motors, and angle adjustable back supporting rack, thigh supporting rack and lower leg supporting rack. Because a mattress is adapted to be placed on the electric bedstead, the conventional electric bedstead is provided at the topside thereof with a plurality of longitudinally and transversely arranged supporting rods or metal net to support the mattress and users lying on the mattress. To fulfill safety standards, the bedstead structure must have a sufficient structural strength that can bear maybe more than 200 kilograms for a single size bed. Therefore, the conventional electric bedstead is quite heavy, resulting in disadvantages in shipping and storage to manufactures and inconveniences to consumers when the consumers carry and assemble the conventional electric bedstead.

SUMMARY OF THE INVENTION

The present invention has been accomplished in view of the above-noted circumstances. It is an objective of the present invention to provide an electric bedstead, which is lightweight with a sufficient weight bearing strength fulfilling requirements of safety standards, facilitating carry, storage and assembly of the electric bedstead.

To attain the above objective, the present invention provides an electric bedstead comprising a frame, a supporting cloth, a first clamping member, and a second clamping member. The frame includes a first rod and a second rod. The supporting cloth has a supporting portion, a first bending portion extending from a first lateral side of the supporting portion and attached on the first rod, and a second bending portion extending from a second lateral side of the supporting portion and attached on the second rod. The first clamping member is mounted to the first rod of the frame in a way that the first bending portion of the supporting cloth is clamped between the first clamping member and the first rod. The second clamping member is mounted to the second rod of the frame in a way that the second bending portion of the supporting cloth is clamped between the second clamping member and the second rod. Compared to the conventional electric bedstead, the lightweight electric bedstead of the present invention greatly reduces its weight, thereby facilitating carry, storage and assembly of the lightweight electric bedstead.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will become more fully understood from the detailed description given herein below and the accompanying drawings which are given by way of illustration only, and thus are not limitative of the present invention, and wherein:

FIG. 1 is a perspective view of a lightweight electric bedstead according to a first embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. 1;

FIG. 3 is an exploded view of a part of the lightweight electric bedstead of the first embodiment of the present invention;

FIG. 4 is a cross-sectional view of a part of a lightweight electric bedstead according to a second embodiment of the present invention; according to a third embodiment of the present invention;

FIG. 6 is a cross-sectional view of a part of a lightweight electric bedstead according to a fourth embodiment of the present invention;

FIG. 7 is a cross-sectional view of a part of a lightweight electric bedstead according to a fifth embodiment of the present invention; and.

FIG. 8 is a cross-sectional view of a part of a lightweight electric bedstead according to a sixth embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

The structure and technical features of the present invention will be detailedly described hereunder by six embodiments and accompany drawings. As shown in FIG. 1, a lightweight electric bedstead 10 provided in accordance with a first embodiment of the present invention is composed of a base 12, a buttock supporting rack 14 mounted on the base 12, a back supporting rack 16 having a rear end pivotally connected with the buttock supporting rack 14, a thigh supporting rack 18 having a front end pivotally connected with the buttock supporting rack 14, a lower leg supporting rack 20 having a front end pivotally connected with the thigh supporting rack 18, and two actuators (not shown) mounted between the base 12 and the back supporting rack 16 and between the base 12 and the thigh supporting rack 18, respectively, such that the back supporting rack 16 and the thigh supporting rack 18 can be upwardly swung by the actuators. The electric bedstead 10 is adapted to support a mattress (not shown) thereon.

The buttock supporting rack 14, the back supporting rack 16, the thigh supporting rack 18 and the lower leg supporting rack 20 have basically a similar structure, which is composed of one or more frames 30, one or more supporting cloths 40, a plurality of first clamping members 50, and a plurality of second clamping members 60. For concise illustration of the present invention, hereunder only the lower leg supporting rack 20, as an example, is given for discussion. FIGS. 2 and 3 are cross-sectional view and exploded view of a part of the lower leg supporting rack 20. As shown in FIGS. 2 and 3, the lower leg supporting rack 20 is composed of a frame 30, a supporting cloth 40, a first clamping member 50 and a second clamping member 60.

The frame 30 has a rectangular shape having parallel and longitudinally arranged first rod 31 and second rod 32, and parallel and transversally arranged third rod 33 and fourth rod 34. The rods 31, 32, 33 and 34 have a similar structure. For concise illustration, hereunder the first rod 31 is taken as an example for discussion. The first rod 31 has a circular cross-section. The first rod 31 is further provided with an inner edge 311 facing an inner portion 301 (hollow center) of the frame 30, a top edge 312 facing upwardly, an outer edge 313 opposite to the inner edge 311, and a bottom edge 314 facing downwardly. In other embodiments, the rods 31 to 34 may have a rectangular cross-section or specific-shaped cross-section.

The supporting cloth 40 has a supporting portion 41 for supporting mattress and bearing weight, a first connecting portion, namely first bending portion 44, extending downwardly from a first lateral side 42 of the supporting portion 41 and attached on the inner edge 311 of the first rod 31, and a second connecting portion, namely second bending portion 47, extending downwardly from a second lateral side 43 of the supporting portion 41 and attached on the inner edge 321 of the second rod 32. For the supporting cloth 40, woven or nonwoven cloth made of plastic material, such as nylon, or natural material, such as cotton or linen, may be used.

The first clamping member 50 is an elongated sheet member made of metal or plastic material. The first clamping member 50 has an arc-shaped cross-section, such that the first clamping member 50 can be smoothly attached on the inner edge 311 of the first rod 31. The first clamping member 50 is provided with three through holes 52, through which three fasteners 54 are inserted. For the fasteners 54, bolts, screws, rivets or other equivalent members may be used. In this embodiment, the fasteners 54 are realized as bolts having threaded shanks inserted through the through holes 52 and the first bending portion 44 of the supporting cloth 40 and screwingly threaded into the first rod 31, such that the first clamping member 50 is fixedly mounted to the first rod 31 of the frame 30 and the first bending portion 44 of the supporting cloth 40 is tightly clamped between the first clamping member 50 and the first rod 31.

Similarly, the second clamping member 60 is fixedly mounted to the second rod 32 of the frame 30 in a way that the second bending portion 47 of the supporting cloth 40 is tightly clamped between the second clamping member 60 and the second rod 32.

With the above-mentioned structure, the supporting cloth 40 can be tightly and fixedly stretched between the first rod 31 and the second rod 32, such that the supporting cloth 40 can provide excellent supporting strength so as to bear the weights of the mattress and the users. According to experimental test, the supporting cloth 40 of the present invention can provide sufficient weight bearing strength fulfilling requirements of safety standards. Compared to conventional electric bedsteads, the electric bedstead 10 of the present invention has a relatively lighter weight, facilitating carry, storage and assembly of the electric bedstead 10 to users, lowering transportation costs of the manufacturers, and reducing purchased costs and shipping burden of the users. Further, users can assemble the electric bedstead 10 with less labor thanks to the lightweight feature of the electric bedstead 10. The electric bedstead 10 having the above-mentioned structural features can achieve the objective of the present invention. As a result, the electric bedstead 10 of the present invention has a great potential in trade market.

Based on the technical features of the present invention, various modifications to the structure of the lightweight electric bedstead 10 of the present invention may be made. For example, the supporting cloth 40 may be fixed between two perpendicular rods, e.g. between the first rod 31 and the third rod 33, or between two rods having a specific included angle therebetween. The way that the first and second bending portions 44 and 47 connect the first and second rods 31 and 32 may be modified too. For example, FIG. 4 shows a part of an electric bedstead 10 a according to a second embodiment of the present invention. The electric bedstead 10 a of the second embodiment has a structure basically same as that of the electric bedstead 10 of the first embodiment, except that the first bending portion 44 a is wound around the first rod 31 a. That is, the first bending portion 44 a is wound around the first rod 31 a from the top edge 312 a, the outer edge 313 a, the bottom edge 314 a to the inner edge 311 a, such that the supporting cloth 40 can be firmly coupled with the frame 30 a.

FIG. 5 shows a part of an electric bedstead 10 b according to a third embodiment of the present invention. The electric bedstead 10 b of this embodiment has a structure basically same as that of the electric bedstead 10 of the first embodiment, except that the supporting cloth 40 b further includes a first covering portion 45 b extending from the first bending portion 44 b, and a periphery of the first covering portion 45 b, namely the end edge portion of the supporting cloth 40, is connected with the first bending portion 44 b by stitching or fusion in a way that an accommodation space 46 b is formed between the first covering portion 45 b and the first bending portion 44 b and receives the first clamping member 50 b. That is, the first covering portion 45 b and the first bending portion 44 b combinedly wrap the first clamping member 50 b therebetween. As such, the supporting cloth 40 b can be firmly coupled with the first clamping member 50 b.

FIG. 6 shows a part of an electric bedstead 10 c according to a fourth embodiment of the present invention. The electric bedstead 10 c of this embodiment has a structure basically same as that of the electric bedstead 10 a of the second embodiment, except that the supporting cloth 40 c further includes a first covering portion 45 c extending from the first bending portion 44 c, and a periphery of the first covering portion 45 c, namely the end edge portion of the supporting cloth 40, is connected with the first bending portion 44 c by stitching or fusion in a way that an accommodation space 46 c is formed between the first covering portion 45 c and the first bending portion 44 c and receives the first clamping member 50 c. That is, the first covering portion 45 c and the first bending portion 44 c combinedly wrap the first clamping member 50 c therebetween. As such, the supporting cloth 40 c can be firmly coupled with the first clamping member 50 c.

FIG. 7 shows a part of an electric bedstead 10 d according to a fifth embodiment of the present invention. The electric bedstead 10 d of this embodiment has a structure basically same as that of the electric bedstead 10 a of the second embodiment, except that the first bending portion 44 d is wound around the first rod 31 d in a way that the first bending portion 44 d is attached on the top edge 312 d, the outer edge 313 d, and the bottom edge 314 d, not attached on the inner edge 311 d. Further, the first clamping member 50 d is mounted to the bottom edge 314 d of the first rod 31 d in a way that the first bending portion 44 d of the supporting cloth 40 d is clamped between the first clamping member Sod and the first rod 31 d.

FIG. 8 shows a part of an electric bedstead 10 e according to a sixth embodiment of the present invention. The electric bedstead 10 e of this embodiment has a structure basically same as that of the electric bedstead 10 d of the fifth embodiment, except that the supporting cloth 40 e further includes a first covering portion 45 e extending from the first bending portion 44 e, and a periphery of the first covering portion 45 e, namely the end edge portion of the supporting cloth 40 e, is connected with the first bending portion 44 e by stitching or fusion in a way that an accommodation space 46 e is formed between the first covering portion 45 e and the first bending portion 44 e and receives the first clamping member 50 e. That is, the first covering portion 45 e and the first bending portion 44 e combinedly wrap the first clamping member 50 e therebetween. As such, the supporting cloth 40 e can be firmly coupled with the first clamping member 50 e.

The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are intended to be included within the scope of the following claims. 

What is claimed is:
 1. A lightweight electric bedstead, comprising: a frame having a first rod and a second rod; a supporting cloth having a supporting portion, a first bending portion extending from a first lateral side of the supporting portion and attached on the first rod, and a second bending portion extending from a second lateral side of the supporting portion and attached on the second rod; a first clamping member mounted to the first rod of the frame in a way that the first bending portion of the supporting cloth is clamped between the first clamping member and the first rod; and a second clamping member mounted to the second rod of the frame in a way that the second bending portion of the supporting cloth is clamped between the second clamping member and the second rod.
 2. The lightweight electric bedstead as claimed in claim 1, wherein the first rod is parallel or perpendicular to the second rod.
 3. The lightweight electric bedstead as claimed in claim 1, wherein the first rod has an inner edge facing an inner portion of the frame, and the first clamping member is mounted to the inner edge of the first rod.
 4. The lightweight electric bedstead as claimed in claim 3, wherein the supporting cloth comprises a first covering portion extending from the first bending portion; a periphery of the first covering portion is connected with the first bending portion in a way that an accommodation space is formed between the first covering portion and the first bending portion: the first clamping member is received in the accommodation space.
 5. The lightweight electric bedstead as claimed in claim 4, wherein the first bending portion of the supporting cloth is wound around the first rod.
 6. The lightweight electric bedstead as claimed in claim 3, wherein the first bending portion of the supporting cloth is wound around the first rod.
 7. The lightweight electric bedstead as claimed in claim 1, wherein the first rod has a top edge facing upwardly, an inner edge facing an inner portion of the frame, an outer edge opposite to the inner edge, and a bottom edge facing downwardly; the first bending portion of the supporting cloth is attached on the top edge, the outer edge and the bottom edge of the first rod, and the first clamping member is mounted to the bottom edge of the first rod.
 8. The lightweight electric bedstead as claimed in claim 7, wherein the supporting cloth comprises a first covering portion extending from the first bending portion; a periphery of the first covering portion is connected with the first bending portion in a way that an accommodation space is formed between the first covering portion and the first bending portion; the first clamping member is received in the accommodation space.
 9. The lightweight electric bedstead as claimed in claim 1, wherein the first clamping member is mounted to the first rod by a plurality of fasteners.
 10. The lightweight electric bedstead as claimed in claim 9, wherein the fastener are bolts, screws, or rivets. 